public float MBTToBeats(Mbt mbt)
{
if (!_HasMidiFile())
{
return(mbt.beat * 4);
}
BarBeatTimeSpan inputSpan = new BarBeatTimeSpan(mbt.measure, mbt.beat, mbt.tick);
BeatTimeSpan outputSpan = TimeConverter.ConvertTo <BeatTimeSpan>(inputSpan, _tempoMap);
float resultBeats = (float)outputSpan.Beats + ((float)outputSpan.Ticks / _TicksPerBeat());
return(resultBeats);
}
public Mbt BeatsToMBT(float beat)
{
if (!_HasMidiFile())
{
return(new Mbt(0, (int)beat, 0));
}
float frac = beat % 1.0f;
int beats = (int)beat;
int ticks = (int)(frac * _TicksPerBeat());
BeatTimeSpan inputSpan = new BeatTimeSpan(beats, ticks);
BarBeatTimeSpan outputSpan = TimeConverter.ConvertTo <BarBeatTimeSpan>(inputSpan, _tempoMap);
return(new Mbt((int)outputSpan.Bars, (int)outputSpan.Beats, (int)outputSpan.Ticks));
}
public float BeatsToSecs(float beat)
{
if (!_HasMidiFile())
{
return(0.0f);
}
float frac = beat % 1.0f;
int beats = (int)beat;
int ticks = (int)(frac * _TicksPerBeat());
BeatTimeSpan inputSpan = new BeatTimeSpan(beats, ticks);
MetricTimeSpan outputSpan = TimeConverter.ConvertTo <MetricTimeSpan>(inputSpan, _tempoMap);
float secs = outputSpan.TotalMicroseconds / 1000000.0f;
return(secs);
}
public float SecsToBeats(float secs)
{
if (!_HasMidiFile())
{
return(0.0f);
}
long microseconds = (long)(secs * 1000000.0f);
MetricTimeSpan inputSpan = new MetricTimeSpan(microseconds);
BeatTimeSpan outputSpan = TimeConverter.ConvertTo <BeatTimeSpan>(inputSpan, _tempoMap);
float beats = (float)outputSpan.Beats;
beats += ((float)outputSpan.Ticks / _TicksPerBeat());
return(beats);
}
